flask_static_server

from flask import Flask
from flask import make_response
import os

app = Flask(__name__)

# Simple flask server to be used locally for serving images to get around constraints such as those created 
# when trying to load textures in ThreeJs. 
# https://stackoverflow.com/questions/24087757/three-js-and-loading-a-cross-domain-image

# Windows Running instuctions, assumes Python and Flask are installed, 
# from inside the directory where this file is located run
# set FLASK_APP=flask_static_server.py
# flask run

# Once running, images can be reached at, for example, http://127.0.0.1:5000/getimages/noise.png

# Directory where the images to be retrieved are stored, using windows pathing
dataDir = os.path.expanduser(r'~\Downloads\static')

@app.route('/getfile/<filename>')
def getFile(filename):
    filename = dataDir + '\\' + filename
    try:
        with open(filename, "rb") as file:
            blob = file.read()
    except:
        return 'The requested file could not be found'

    r = make_response(blob)
    # rough check to determine the file extension in order to set an exact mimetype.
    if filename[-3:] == 'jpg':
        r.mimetype='image/jpg'
    elif filename[-4:] == 'jpeg':
        r.mimetype='image/jpeg'
    elif filename[-3:] == 'gif':
        r.mimetype='image/gif'
    else:
        r.mimetype='image/png'
    r.headers['Access-Control-Allow-Origin'] = '*'

    return r